Improvement in boot and shoe nailing machines



G. MG'KAY 2. H. P. FAIRFIELD.

n Y v:ooTAN'n sHoE NAILING MACHINE.; Ne.171,300. Patented nec. 21,1875.

, %iw im W7 W77 vN. PETERS, FHOTO-LITHOGRAPNER, WASMNGTON D C UNITED STATES PATENT QEEICE.

GORDON MGKAY, OF CAMBRIDGE, AND HADLEY P. FAIRFIELD, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN BQOT AND SHOE NAILING MACHINES.

Specification forming part of Letters Patent No. 171,300, dated December 21, 1875; application filed November 11, 1875.

To all whom it may concern:

Be it known that we, GORDON MGKAY, of Cambridge, Middlesex county, and HADLEY P. FAIRFIELD, of Boston, Suifolk county, all

in the State of Massachusetts, have invented an Improved Nailing-Machine, of which the following is a specification:

This invention relates to improvements in nailing-machines for attaching the soles to the uppers in boots and shoes; and the invention consists in mechanism for cutting the nails successively from the nail-strip.`

The cutting mechanism is composed of two 4 jaws or cutters, that grasp the nail and move .the cutters for severing and holding the nail, removed from the machine, and with theheadcutter omitted.

On the drawing, a denotes the tube-bar of a nailing or peggin g machine, and b the guide in which the rod c of the driver moves, these parts being of any well-known or suitable construction.l

The parts constituting this invention are to be applied to any well-known form of nailingmachine, preferably one using a horn, and a feeding mechanism to move the boot or shoe over the horn, for the reception of the nails or fastenings securing the sole to the upper.

The nails are cut from a strip carried in a strip-box, d, supported in any well-known way, and provided with a nail-strip-guiding groove or passage, and having working in connection therewith devices for moving the strip y forward. An opening is formed in the bar c, to

and, in this instance of our invention, they move in an arc just back of the stationary cutter f, and just beyond the end of the stripbox. The end of the nail-strip is passed beyond the edge of the stationary cutter f, and projected between the jaws gh ofthe devices for cutting and holding the nail, and between the edge of the head-cutter i, a portion of the stationary cuttin g-edge f also extending opposite the headcutter, and the end of the nail-strip meeting a gage, l, (see Figs. l and 3,) which is, in this instance, a horizontal pin. The edge of the cutter carried by the-member g is retained substantially in line with the edge ofthe stationary cutter f, when the members g h are opened for the reception of the end of the strip by a stop, (shown in dotted lines in Fig. 2,) which acts in the notch w, and which is actuated by a cam, so as to be thrown out of the notch at the proper time, so as to permit the end g ofthe arm k to pass by the stationary cutter f. The edge of the headingcutter c', at the commencement ofthe cutting movement, is back of the edge of cutter h, and the arm m of cutter h and arm n of cutterz' are held in the position shown in Fig. 2 by springs o p, shown in full and dotted lines, Figs. 2 and 3. In this position, and with the end of the nail-strip between the jaws, the arm fn of the head-cuttin g jaw is moved positively in the direction of the arrow, Fig. 2, by suitable or well-known devices, operated by the mechanism of the nailing-machine, and the heading-cutter acts on the nail-strip held between it and the stationary cutter f and the cutter g, held by the stop, and a portion of the upper edge of the strip is cut out, the edge f and the vertical face of cutter t cuttingthe strip vertically, and

, the lower edge of t' and the top of cutter g cutting the strip horizontally, the head-cutter severing from the upper edge of a strip a portion thereof equal to the excess of the length of the nail next to be cut and driven, the peg-tube r' being arranged in any wellknown way, or as represented in Patent N 0. 169,463, granted to us November 2, 1875, so as to rise and fall with reference to the strip-box, so as to govern the position of the head and cutters with relation to the thickness of the sole, a thin sole allowing the tube and cutters to descend lower than a thick sole, thereby permitting the head-cutter to cut off or remove more or less of the upper edge of the nailstrip, to out the nail to correspond with the thickness of the sole.v By the time the headcutter has, or substantially as it cuts the strip, to remove its surplus length, but, preferably, after the operation of thehead-cutter on the strip, the varm n strikes the adjustable screw s, the `stop-holding arm lc being now released, and the arm athen moves the arm m of the movable cutter h positively, such cutter, up to this time, having` been simply held tirmly against the strip, and closes. the member h, cutting the nail-strip held between it and the 'Stationary cutter f, andthe member h then movespast the cutter f and carries the nail Ypast the edge of the cutter f, the two acting with a shear-like cut, smoothly and completely severing the strip, and obviating the 'tinlike edge oftenl left by cutters which simply act as cutting-nippers. During the movement ofthe cutter h, and after the arm k is released, the member gis held toward the member h by the sprin g p, or equivalent, with sufficientforce to retain the nail in a vertical position, and in the grooved portions of the cutters g h. The arm n of the head-cutter continues to move during the action of the member h of the cutters, and by the time the nail is severed from f the strip (the nail so severed being yet held between 'the members g h, and in the grooves formed therein) the head-cutter i has moved so that the cutting-edge is beyond the head of the member h, and the arm u has moved far enough to bringthe nail-.driver guide-openingt (see Fig. 2) in line with the path of the driver, the arm m of the movable member h having` been stopped by a screw, u, in the line of the movement of the driver, and in such position the driver descends and drives the nail from the members ofthe cutters into the sole, the nail passing through the tube r. As the arm n is moved backward opposite the direction of the arrow l, the link pulls on the stud y of the arm m, moving it, and the arm m, by its pin z acting on spring lo of arm k,

moves it also; the spring-connection p, be-

tween the arms m k, permitting the arm. m to We claim- 1. In a machine for uniting soles to uppers,

a stationary cutter and two movable cutters, adapted to sever the nail, and to hold and carry the nail beyond the stationary cutter, substantially as described.

2. The tube-bar of a nailing-machine, a stripbox, and a stationary cutter, in combination with two cutters to sever and move a nail past the stationary cutter and hold it, substantially as described.

3. The tube-bar of a nailingmachine and a stationary cutter, in combination with the movable nail severing and holding cutters and the head-cutter, substantially as described.

4. The head-cutter, in combination with a cutter adapted to be held in a fixed position during the action of the heading-cutters, and to be then released, substantially as and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

GORDON MGKAY. I

, HADLEY P. FAIRFIELD.

Witnesses:

O. M. HOLMES, FRANK F. STANLEY. 

